A more thorough explanation:

The Law School Admissions Test (LSAT) is a standardized exam that measures a student's likelihood of success in law school. Most law schools in the United States use the results of this exam in their admissions decisions.

For example, if a student wants to apply to law school, they will likely need to take the LSAT and achieve a certain score in order to be considered for admission. The LSAT is designed to test a student's critical thinking, analytical reasoning, and reading comprehension skills, which are all important for success in law school.

Another example is that some law schools may weigh a student's LSAT score more heavily than other factors, such as their undergraduate GPA or work experience. This means that a high LSAT score can greatly improve a student's chances of being accepted into a competitive law school.